RCD Safety Switch Testing

Your RCD (Residual Current Device) safety switch is one of the unsung heroes of your electrical system. It continuously monitors for faults and cuts power in milliseconds when something goes wrong. That lightning-fast response can mean the difference between a close call and a serious workplace accident.

At CPM Test n Tag and Fire Safety, we provide comprehensive RCD testing for businesses across New Zealand, ensuring your safety switches perform when it matters most.

What RCDs Do

RCDs are engineered to detect electrical leakage and current imbalances. When functioning correctly, they:

• Protect people from electric shock
• Prevent equipment damage from electrical faults
• Reduce fire risk from electrical malfunctions

While pressing the built-in test button checks basic functionality, it doesn’t verify whether your RCD will trip at the correct speed during an actual fault.

Professional testing uses specialized equipment that simulates real electrical faults and precisely measures response times. If a safety switch reacts too slowly—or fails to trip entirely—it cannot protect your team.

A properly functioning RCD can prevent fatal electric shocks. Most people never consider their safety switches until an emergency occurs—regular testing provides invaluable peace of mind.

New Zealand workplaces must maintain safe electrical systems. RCD testing is a standard requirement under AS/NZS 3760 compliance protocols.

Testing identifies issues like internal damage, wear, or developing faults before they become dangerous or expensive.

Our detailed, organized reports provide essential documentation for compliance audits, safety inspections, and insurance requirements.

We service the complete range of RCDs commonly found in New Zealand workplaces:

Testing intervals depend on your work environment and risk level. AS/NZS 3760 recommends:

We provide automatic reminder services so you never miss a scheduled test.

We locate all RCDs and analyze your electrical system configuration for comprehensive coverage.

Using calibrated equipment, we simulate electrical faults and measure response times to ensure each RCD meets strict safety requirements.

Receive clear, comprehensive reports covering every test result with compliance evidence.

Equipment tagging with next test due dates, plus automatic notifications for upcoming testing schedules.

Skilled professionals who perform RCD testing safely and accurately to industry standards.

Modern, properly calibrated instruments for precise fault simulation and measurement.

Organized, detailed reports that are easy to file and reference for compliance purposes.

Convenient booking options designed to minimize business disruption.

Streamlined electrical and fire safety services for easier compliance management.

Without regular testing, RCDs may:

• Fail to trip quickly enough during electrical faults
• Increase risk of electric shock injuries
• Allow equipment damage from undetected faults
• Contribute to electrical fire hazards

Missing test records can complicate:

• Safety compliance audits
• Insurance claim processes
• WorkSafe NZ inspections
• Legal liability situations

Ensure your safety switches are ready to protect your team when it matters most.

Ready to schedule professional RCD testing? We make workplace safety simple and reliable.

• Free quotes for all RCD testing services
• Fast scheduling to meet your operational needs
• Regional coverage across the North Island:

• • Auckland North
  • Waikato
  • Bay of Plenty
  • Manawatū–Whanganui

Don’t wait for an electrical emergency. Book your RCD testing today.

Professional RCD safety switch testing you can trust—keeping New Zealand workplaces safe.